Merge pull request #320 from etosan/master

major meters update

freebsd/FreeBSDProcessList.c

@@ -23,53 +23,160 @@ in the source distribution for its full text.
 #include <sys/param.h>
 #include <sys/jail.h>
 #include <sys/uio.h>
+#include <sys/resource.h>
 
 #define JAIL_ERRMSGLEN	1024
 char jail_errmsg[JAIL_ERRMSGLEN];
 
 typedef struct CPUData_ {
-   unsigned long long int totalTime;
+
-   unsigned long long int totalPeriod;
+   double userPercent;
+   double nicePercent;
+   double systemPercent;
+   double irqPercent;
+   double idlePercent;
+   double systemAllPercent;
+
 } CPUData;
 
 typedef struct FreeBSDProcessList_ {
    ProcessList super;
    kvm_t* kd;
 
+   int zfsArcEnabled;
+
+   unsigned long long int memWire;
+   unsigned long long int memActive;
+   unsigned long long int memInactive;
+   unsigned long long int memFree;
+   unsigned long long int memZfsArc;
+
+
    CPUData* cpus;
 
+   unsigned long   *cp_time_o;
+   unsigned long   *cp_time_n;
+
+   unsigned long  *cp_times_o;
+   unsigned long  *cp_times_n;
+
 } FreeBSDProcessList;
 
 }*/
 
-static int MIB_vm_stats_vm_v_wire_count[4];
-static int MIB_vm_stats_vm_v_cache_count[4];
-static int MIB_hw_physmem[2];
 
+static int MIB_hw_physmem[2];
+static int MIB_vm_stats_vm_v_page_count[4];
+static int pageSize;
 static int pageSizeKb;
 
+static int MIB_vm_stats_vm_v_wire_count[4];
+static int MIB_vm_stats_vm_v_active_count[4];
+static int MIB_vm_stats_vm_v_cache_count[4];
+static int MIB_vm_stats_vm_v_inactive_count[4];
+static int MIB_vm_stats_vm_v_free_count[4];
+
+static int MIB_vfs_bufspace[2];
+
+static int MIB_kstat_zfs_misc_arcstats_size[5];
+
+static int MIB_kern_cp_time[2];
+static int MIB_kern_cp_times[2];
+static int kernelFScale;
+
+
 ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidWhiteList, uid_t userId) {
    FreeBSDProcessList* fpl = calloc(1, sizeof(FreeBSDProcessList));
    ProcessList* pl = (ProcessList*) fpl;
    ProcessList_init(pl, Class(FreeBSDProcess), usersTable, pidWhiteList, userId);
 
-   int cpus = 1;
+   size_t len;
-   size_t sizeof_cpus = sizeof(cpus);
-   int err = sysctlbyname("hw.ncpu", &cpus, &sizeof_cpus, NULL, 0);
-   if (err) cpus = 1;
-   pl->cpuCount = MAX(cpus, 1);
-   fpl->cpus = realloc(fpl->cpus, cpus * sizeof(CPUData));
 
-   for (int i = 0; i < cpus; i++) {
+   // physical memory in system: hw.physmem
-      fpl->cpus[i].totalTime = 1;
+   // physical page size: hw.pagesize
-      fpl->cpus[i].totalPeriod = 1;
+   // usable pagesize : vm.stats.vm.v_page_size
+   len = 2; sysctlnametomib("hw.physmem", MIB_hw_physmem, &len);
+
+   len = sizeof(pageSize);
+   if (sysctlbyname("vm.stats.vm.v_page_size", &pageSize, &len, NULL, 0) == -1) {
+      pageSize = PAGE_SIZE;
+      pageSizeKb = PAGE_SIZE_KB;
+   } else {
+      pageSizeKb = pageSize / ONE_K;
    }
 
-   size_t len;
+   // usable page count vm.stats.vm.v_page_count
-   len = 4; sysctlnametomib("vm.stats.vm.v_wire_count",  MIB_vm_stats_vm_v_wire_count, &len);
+   // actually usable memory : vm.stats.vm.v_page_count * vm.stats.vm.v_page_size
+   len = 4; sysctlnametomib("vm.stats.vm.v_page_count", MIB_vm_stats_vm_v_page_count, &len);
+
+   len = 4; sysctlnametomib("vm.stats.vm.v_wire_count", MIB_vm_stats_vm_v_wire_count, &len);
+   len = 4; sysctlnametomib("vm.stats.vm.v_active_count", MIB_vm_stats_vm_v_active_count, &len);
    len = 4; sysctlnametomib("vm.stats.vm.v_cache_count", MIB_vm_stats_vm_v_cache_count, &len);
-   len = 2; sysctlnametomib("hw.physmem",                MIB_hw_physmem, &len);
+   len = 4; sysctlnametomib("vm.stats.vm.v_inactive_count", MIB_vm_stats_vm_v_inactive_count, &len);
-   pageSizeKb = PAGE_SIZE_KB;
+   len = 4; sysctlnametomib("vm.stats.vm.v_free_count", MIB_vm_stats_vm_v_free_count, &len);
+
+   len = 2; sysctlnametomib("vfs.bufspace", MIB_vfs_bufspace, &len);
+
+   len = sizeof(fpl->memZfsArc);
+   if (sysctlbyname("kstat.zfs.misc.arcstats.size", &fpl->memZfsArc, &len,
+	    NULL, 0) == 0 && fpl->memZfsArc != 0) {
+      sysctlnametomib("kstat.zfs.misc.arcstats.size", MIB_kstat_zfs_misc_arcstats_size, &len);
+		  fpl->zfsArcEnabled = 1;
+   } else {
+		  fpl->zfsArcEnabled = 0;
+   }
+
+
+   int smp = 0;
+   len = sizeof(smp);
+
+   if (sysctlbyname("kern.smp.active", &smp, &len, NULL, 0) != 0 || len != sizeof(smp)) {
+      smp = 0;
+   }
+
+   int cpus = 1;
+   len = sizeof(cpus);
+
+   if (smp) {
+      int err = sysctlbyname("kern.smp.cpus", &cpus, &len, NULL, 0);
+      if (err) cpus = 1;
+   } else {
+      cpus = 1;
+   }
+
+   size_t sizeof_cp_time_array = sizeof(unsigned long) * CPUSTATES;
+   len = 2; sysctlnametomib("kern.cp_time", MIB_kern_cp_time, &len);
+   fpl->cp_time_o = calloc(cpus, sizeof_cp_time_array);
+   fpl->cp_time_n = calloc(cpus, sizeof_cp_time_array);
+   len = sizeof_cp_time_array;
+
+   // fetch intial single (or average) CPU clicks from kernel
+   sysctl(MIB_kern_cp_time, 2, fpl->cp_time_o, &len, NULL, 0);
+
+   // on smp box, fetch rest of intial CPU's clicks
+   if (cpus > 1) {
+      len = 2; sysctlnametomib("kern.cp_times", MIB_kern_cp_times, &len);
+      fpl->cp_times_o = calloc(cpus, sizeof_cp_time_array);
+      fpl->cp_times_n = calloc(cpus, sizeof_cp_time_array);
+      len = cpus * sizeof_cp_time_array;
+      sysctl(MIB_kern_cp_times, 2, fpl->cp_times_o, &len, NULL, 0);
+   }
+
+   pl->cpuCount = MAX(cpus, 1);
+
+   if (cpus == 1 ) {
+     fpl->cpus = realloc(fpl->cpus, sizeof(CPUData));
+   } else {
+     // on smp we need CPUs + 1 to store averages too (as kernel kindly provides that as well)
+     fpl->cpus = realloc(fpl->cpus, (pl->cpuCount + 1) * sizeof(CPUData));
+   }
+
+
+   len = sizeof(kernelFScale);
+   if (sysctlbyname("kern.fscale", &kernelFScale, &len, NULL, 0) == -1) {
+      //sane default for kernel provded CPU precentage scaling, at least on x86 machines, in case this sysctl call failed
+      kernelFScale = 2048;
+   }
 
    fpl->kd = kvm_open(NULL, "/dev/null", NULL, 0, NULL);
    assert(fpl->kd);
@@ -81,22 +188,149 @@ void ProcessList_delete(ProcessList* this) {
    const FreeBSDProcessList* fpl = (FreeBSDProcessList*) this;
    if (fpl->kd) kvm_close(fpl->kd);
 
+   if (fpl->cp_time_o != NULL) free(fpl->cp_time_o);
+   if (fpl->cp_time_n != NULL) free(fpl->cp_time_n);
+   if (fpl->cp_times_o != NULL) free(fpl->cp_times_o);
+   if (fpl->cp_times_n != NULL) free(fpl->cp_times_n);
+
    ProcessList_done(this);
    free(this);
 }
 
-static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
+static inline void FreeBSDProcessList_scanCPUTime(ProcessList* pl) {
    const FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
 
+   int cpus   = pl->cpuCount;   // actual CPU count
+   int maxcpu = cpus;           // max iteration (in case we have average + smp)
+   int cp_times_offset;
+
+   assert(cpus > 0);
+
+   size_t sizeof_cp_time_array;
+
+   unsigned long     *cp_time_n; // old clicks state
+   unsigned long     *cp_time_o; // current clicks state
+
+   unsigned long long total_o = 0;
+   unsigned long long total_n = 0;
+   unsigned long long total_d = 0;
+   unsigned long cp_time_d[CPUSTATES];
+   double        cp_time_p[CPUSTATES];
+
+   // get averages or single CPU clicks
+   sizeof_cp_time_array = sizeof(unsigned long) * CPUSTATES;
+   sysctl(MIB_kern_cp_time, 2, fpl->cp_time_n, &sizeof_cp_time_array, NULL, 0);
+
+   // get rest of CPUs
+   if (cpus > 1) {
+       // on smp systems FreeBSD kernel concats all CPU states into one long array in
+       // kern.cp_times sysctl OID
+       // we store averages in fpl->cpus[0], and actual cores after that
+       maxcpu = cpus + 1;
+       sizeof_cp_time_array = cpus * sizeof(unsigned long) * CPUSTATES;
+       sysctl(MIB_kern_cp_times, 2, fpl->cp_times_n, &sizeof_cp_time_array, NULL, 0);
+   }
+
+   for (int i = 0; i < maxcpu; i++) {
+      if (cpus == 1) {
+         // single CPU box
+         cp_time_n = fpl->cp_time_n;
+         cp_time_o = fpl->cp_time_o;
+      } else {
+         if (i == 0 ) {
+           // average
+           cp_time_n = fpl->cp_time_n;
+           cp_time_o = fpl->cp_time_o;
+         } else {
+           // specific smp cores
+           cp_times_offset = i - 1;
+           cp_time_n = fpl->cp_times_n + (cp_times_offset * CPUSTATES);
+           cp_time_o = fpl->cp_times_o + (cp_times_offset * CPUSTATES);
+         }
+      }
+
+      // diff old vs new
+      for (int s = 0; s < CPUSTATES; s++) {
+        cp_time_d[s] = cp_time_n[s] - cp_time_o[s];
+        total_o += cp_time_o[s];
+        total_n += cp_time_n[s];
+      }
+
+      // totals
+      total_d = total_n - total_o;
+      if (total_d < 1 ) total_d = 1;
+
+      // save current state as old and calc percentages
+      for (int s = 0; s < CPUSTATES; ++s) {
+        cp_time_o[s] = cp_time_n[s];
+        cp_time_p[s] = ((double)cp_time_d[s]) / ((double)total_d) * 100;
+      }
+
+      CPUData* cpuData = &(fpl->cpus[i]);
+      cpuData->userPercent      = cp_time_p[CP_USER];
+      cpuData->nicePercent      = cp_time_p[CP_NICE];
+      cpuData->systemPercent    = cp_time_p[CP_SYS];
+      cpuData->irqPercent       = cp_time_p[CP_INTR];
+      cpuData->systemAllPercent = cp_time_p[CP_SYS] + cp_time_p[CP_INTR];
+      // this one is not really used, but we store it anyway
+      cpuData->idlePercent      = cp_time_p[CP_IDLE];
+   }
+}
+
+static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
+   FreeBSDProcessList* fpl = (FreeBSDProcessList*) pl;
+
+   // @etosan:
+   // memory counter relationships seem to be these:
+   //  total = active + wired + inactive + cache + free
+   //  htop_used (unavail to anybody) = active + wired
+   //  htop_cache (for cache meter)   = buffers + cache
+   //  user_free (avail to procs)     = buffers + inactive + cache + free
+   //
+   // with ZFS ARC situation becomes bit muddled, as ARC behaves like "user_free"
+   // and belongs into cache, but is reported as wired by kernel
+   //
+   // htop_used   = active + (wired - arc)
+   // htop_cache  = buffers + cache + arc
    size_t len = sizeof(pl->totalMem);
+
+   //disabled for now, as it is always smaller than phycal amount of memory...
+   //...to avoid "where is my memory?" questions
+   //sysctl(MIB_vm_stats_vm_v_page_count, 4, &(pl->totalMem), &len, NULL, 0);
+   //pl->totalMem *= pageSizeKb;
    sysctl(MIB_hw_physmem, 2, &(pl->totalMem), &len, NULL, 0);
    pl->totalMem /= 1024;
-   sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(pl->usedMem), &len, NULL, 0);
+
-   pl->usedMem *= pageSizeKb;
+   sysctl(MIB_vm_stats_vm_v_active_count, 4, &(fpl->memActive), &len, NULL, 0);
-   pl->freeMem = pl->totalMem - pl->usedMem;
+   fpl->memActive *= pageSizeKb;
+
+   sysctl(MIB_vm_stats_vm_v_wire_count, 4, &(fpl->memWire), &len, NULL, 0);
+   fpl->memWire *= pageSizeKb;
+
+   sysctl(MIB_vfs_bufspace, 2, &(pl->buffersMem), &len, NULL, 0);
+   pl->buffersMem /= 1024;
+
    sysctl(MIB_vm_stats_vm_v_cache_count, 4, &(pl->cachedMem), &len, NULL, 0);
    pl->cachedMem *= pageSizeKb;
 
+   if (fpl->zfsArcEnabled) {
+      len = sizeof(fpl->memZfsArc);
+      sysctl(MIB_kstat_zfs_misc_arcstats_size, 5, &(fpl->memZfsArc), &len , NULL, 0);
+      fpl->memZfsArc /= 1024;
+      fpl->memWire -= fpl->memZfsArc;
+      pl->cachedMem += fpl->memZfsArc;
+      // maybe when we learn how to make custom memory meter
+      // we could do custom arc breakdown?
+   }
+
+   pl->usedMem = fpl->memActive + fpl->memWire;
+
+   //currently unused, same as with arc, custom meter perhaps
+   //sysctl(MIB_vm_stats_vm_v_inactive_count, 4, &(fpl->memInactive), &len, NULL, 0);
+   //sysctl(MIB_vm_stats_vm_v_free_count, 4, &(fpl->memFree), &len, NULL, 0);
+   //pl->freeMem  = fpl->memInactive + fpl->memFree;
+   //pl->freeMem *= pageSizeKb;
+
    struct kvm_swap swap[16];
    int nswap = kvm_getswapinfo(fpl->kd, swap, sizeof(swap)/sizeof(swap[0]), 0);
    pl->totalSwap = 0;
@@ -109,7 +343,6 @@ static inline void FreeBSDProcessList_scanMemoryInfo(ProcessList* pl) {
    pl->usedSwap *= pageSizeKb;
 
    pl->sharedMem = 0;  // currently unused
-   pl->buffersMem = 0; // not exposed to userspace
 }
 
 char* FreeBSDProcessList_readProcessName(kvm_t* kd, struct kinfo_proc* kproc, int* basenameEnd) {
@@ -186,20 +419,21 @@ void ProcessList_goThroughEntries(ProcessList* this) {
    bool hideUserlandThreads = settings->hideUserlandThreads;
 
    FreeBSDProcessList_scanMemoryInfo(this);
+   FreeBSDProcessList_scanCPUTime(this);
 
+   int cpus = this->cpuCount;
    int count = 0;
    struct kinfo_proc* kprocs = kvm_getprocs(fpl->kd, KERN_PROC_ALL, 0, &count);
 
    for (int i = 0; i < count; i++) {
       struct kinfo_proc* kproc = &kprocs[i];
-
       bool preExisting = false;
+      bool isIdleProcess = false;
       Process* proc = ProcessList_getProcess(this, kproc->ki_pid, &preExisting, (Process_New) FreeBSDProcess_new);
       FreeBSDProcess* fp = (FreeBSDProcess*) proc;
 
       proc->show = ! ((hideKernelThreads && Process_isKernelThread(fp)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
 
-
       if (!preExisting) {
          fp->jid = kproc->ki_jid;
          proc->pid = kproc->ki_pid;
@@ -207,6 +441,7 @@ void ProcessList_goThroughEntries(ProcessList* this) {
            fp->kernel = 1;
          else
            fp->kernel = 0;
+         proc->ppid = kproc->ki_ppid;
          proc->tpgid = kproc->ki_tpgid;
          proc->tgid = kproc->ki_pid;
          proc->session = kproc->ki_sid;
@@ -220,27 +455,51 @@ void ProcessList_goThroughEntries(ProcessList* this) {
          fp->jname = FreeBSDProcessList_readJailName(kproc);
       } else {
          if(fp->jid != kproc->ki_jid) {
+            // proces can enter jail anytime
             fp->jid = kproc->ki_jid;
             free(fp->jname);
             fp->jname = FreeBSDProcessList_readJailName(kproc);
          }
+         if (proc->ppid != kproc->ki_ppid) {
+            // if there are reapers in the system, proces can get reparented anytime
+            proc->ppid = kproc->ki_ppid;
+         }
+         if(proc->st_uid != kproc->ki_uid) {
+            // some proceses change users (eg. to lower privs)
+            proc->st_uid = kproc->ki_uid;
+            proc->user = UsersTable_getRef(this->usersTable, proc->st_uid);
+         }
          if (settings->updateProcessNames) {
             free(proc->comm);
             proc->comm = FreeBSDProcessList_readProcessName(fpl->kd, kproc, &proc->basenameOffset);
          }
       }
 
-      proc->ppid = kproc->ki_ppid;
+      // from FreeBSD source /src/usr.bin/top/machine.c
-
+      proc->m_size = kproc->ki_size / 1024;
-      proc->m_size = kproc->ki_size / pageSizeKb / 1000;
+      proc->m_resident = kproc->ki_rssize * pageSizeKb;
-      proc->m_resident = kproc->ki_rssize; // * pageSizeKb;
       proc->nlwp = kproc->ki_numthreads;
       proc->time = (kproc->ki_runtime + 5000) / 10000;
 
+      proc->percent_cpu = 100.0 * ((double)kproc->ki_pctcpu / (double)kernelFScale);
+      if (proc->percent_cpu > 0.1) {
+         // system idle process should own all CPU time left regardless of CPU count
+         if ( strcmp("idle", kproc->ki_comm) == 0 ) {
+            isIdleProcess = true;
+         } else {
+            if (cpus > 1)
+               proc->percent_cpu = proc->percent_cpu / (double) cpus;
+         }
+      }
+      if (isIdleProcess == false && proc->percent_cpu >= 99.8) {
+         // don't break formatting
+         proc->percent_cpu = 99.8;
+      }
+
       proc->priority = kproc->ki_pri.pri_level - PZERO;
 
       if (strcmp("intr", kproc->ki_comm) == 0 && kproc->ki_flag & P_SYSTEM) {
-         proc->nice = 0; //@etosan: freebsd intr kernel process (not thread) has weird nice value
+         proc->nice = 0; //@etosan: intr kernel process (not thread) has weird nice value
       } else if (kproc->ki_pri.pri_class == PRI_TIMESHARE) {
          proc->nice = kproc->ki_nice - NZERO;
       } else if (PRI_IS_REALTIME(kproc->ki_pri.pri_class)) {
@@ -249,7 +508,6 @@ void ProcessList_goThroughEntries(ProcessList* this) {
          proc->nice = PRIO_MAX + 1 + kproc->ki_pri.pri_level - PRI_MIN_IDLE;
       }
 
-
       switch (kproc->ki_stat) {
       case SIDL:   proc->state = 'I'; break;
       case SRUN:   proc->state = 'R'; break;

freebsd/Platform.c

@@ -16,6 +16,7 @@ in the source distribution for its full text.
 #include "ClockMeter.h"
 #include "HostnameMeter.h"
 #include "FreeBSDProcess.h"
+#include "FreeBSDProcessList.h"
 
 #include <sys/types.h>
 #include <sys/sysctl.h>
@@ -143,15 +144,52 @@ int Platform_getMaxPid() {
 }
 
 double Platform_setCPUValues(Meter* this, int cpu) {
-   // TODO
+   FreeBSDProcessList* fpl = (FreeBSDProcessList*) this->pl;
+   int cpus = this->pl->cpuCount;
+   CPUData* cpuData;
+
+   if (cpus == 1) {
+     // single CPU box has everything in fpl->cpus[0]
+     cpuData = &(fpl->cpus[0]);
+   } else {
+     cpuData = &(fpl->cpus[cpu]);
+   }
+
+   double  percent;
+   double* v = this->values;
+
+   v[CPU_METER_NICE]   = cpuData->nicePercent;
+   v[CPU_METER_NORMAL] = cpuData->userPercent;
+   if (this->pl->settings->detailedCPUTime) {
+      v[CPU_METER_KERNEL]  = cpuData->systemPercent;
+      v[CPU_METER_IRQ]     = cpuData->irqPercent;
+      Meter_setItems(this, 4);
+      percent = v[0]+v[1]+v[2]+v[3];
+   } else {
+      v[2] = cpuData->systemAllPercent;
+      Meter_setItems(this, 3);
+      percent = v[0]+v[1]+v[2];
+   }
+
+   percent = MIN(100.0, MAX(0.0, percent));
+   if (isnan(percent)) percent = 0.0;
+   return percent;
 }
 
 void Platform_setMemoryValues(Meter* this) {
    // TODO
+   ProcessList* pl = (ProcessList*) this->pl;
+
+   this->total = pl->totalMem;
+   this->values[0] = pl->usedMem;
+   this->values[1] = pl->buffersMem;
+   this->values[2] = pl->cachedMem;
 }
 
 void Platform_setSwapValues(Meter* this) {
-   // TODO
+   ProcessList* pl = (ProcessList*) this->pl;
+   this->total = pl->totalSwap;
+   this->values[0] = pl->usedSwap;
 }
 
 void Platform_setTasksValues(Meter* this) {